[aminepoxnet]

Hi my dears,
I am amin and tried to model a 2D face in fluent that contains of tow circles. The smallest circle place in the biggest and this small circle moves freely in the big circle. Between these tow circles fills with high pressure oil and an external fixed load applies to the small circle.
It means that a circle in a bigger circle that this small circle moves freely within the bigger circle. there is a high pressure liquid oil between these tow circles and a fixed load applied to the small circle.
Please help me, how to use Dynamic Mesh in Fluent to model this freely movement of small circle? Is there any way without UDF and Profiles to model this freely movement?